| Date | IP Address |
| 2024-06-09 | 18.192.147.245 (ClassC) |
| 2024-07-09 | 3.66.254.144 (ClassC) |
| 2024-10-23 | 18.159.205.172 (ClassC) |
| 2025-01-15 | 3.125.255.131 (ClassC) |
| 2025-02-20 | 35.156.228.194 (ClassC) |
| 2025-03-14 | 35.156.151.6 (ClassC) |
| 2025-04-28 | 52.29.205.56 (ClassC) |
| 2025-05-08 | 35.158.58.28 (ClassC) |
| 2025-07-17 | 18.192.251.164 (ClassC) |
| 2025-08-11 | 35.156.162.22 (ClassC) |
| 2025-09-01 | 3.121.35.231 (ClassC) |
| 2025-11-09 | 52.57.244.6 (ClassC) |
| 2026-02-28 | 52.28.90.151 (ClassC) |
| Date | Domain | IP |
| core.qa.dunning.services.otto-payments.de | 2025-10-14 | 52.59.103.139 |
| core.live.dunning.services.otto-payments.de | 2024-06-09 | 18.192.147.245 |